TransformerExample of transformer with short circuit impedance, transmission resistances and load 
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This examples shows the operational behavior of transformer with short circuit impedance. The transformer is loaded with constant current magnitude of 250A but variable phase angle. The angle varies from 0 to 360 degrees within one second of simulation time.
Transformer data
V1N = 1000 V
V2N = 200 V
SN = 50 kVA
Z_{k} = 0.72 Ohm + j*0.96 Ohm
Plot the real part of the secondary voltage idealTransformer.v2.re
on the x axis and idealTransformer.v2.im
on the y axis. The locus of this complex voltage v_{2}
is a circle. The center of the circle is the primary supply voltage divided by the transformation ratio of n=5
. Since in this experiment the load current magnitude is constant, the voltage drop across the short circuit impedance of the transformer is constant, as well. The radius of the circle is equal to the constant magnitude of the voltage drop across the short circuit impedance.
voltageSource 
Type: VoltageSource 


idealTransformer 
Type: IdealTransformer 

sensor0 
Type: PowerSensor 

zk 
Type: Impedance 

load 
Type: VariableCurrentSource 

sensorL 
Type: PowerSensor 

ground1 
Type: Ground 

ground2 
Type: Ground 

v2 
Type: VoltageSensor 

polarToComplex 
Type: PolarToComplex 

const 
Type: Constant 

ramp 
Type: Ramp 

constFrequency 
Type: Constant 

i2 
Type: CurrentSensor 

i1 
Type: CurrentSensor 